{"NOAAStudyId":"9902","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2010-09-23","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-9902.xml","doi":null,"earliestYearBP":39291,"earliestYearCE":-37341,"entryId":"noaa-lake-9902","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":null}],"investigators":"Abbott, M.B.; Edwards, M.E.; Finney, B.P.","mostRecentYearBP":44,"mostRecentYearCE":1906,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/9902","originalSource":null,"publication":[{"abstract":"Burial Lake in northwest Alaska records changes in water level \nand regional vegetation since ~39,000 cal yr BP based on terrestrial \nmacrofossil AMS radiocarbon dates. A sedimentary unconformity is \ndated between 34,800 and 23,200 cal yr BP. During all or some of \nthis period there was a hiatus in deposition indicating a major drop \nin lake level and deflation of lacustrine sediments. MIS 3 vegetation \nwas herb-shrub tundra; more xeric graminoid-herb tundra developed \nafter 23,200 cal yr BP. The tundra gradually became more mesic after \n17,000 cal yr BP. Expansions of Salix then Betula, at 15,000 and \n14,000 cal yr BP, respectively, are coincident with a major rise \nin lake level marked by increasing fine-grained sediment and higher \norganic matter content. Several sites in the region display disrupted \nsedimentation and probable hiatuses during the last glacial maximum \n(LGM); together regional data indicate an arid interval prior to \nand during the LGM and continued low moisture levels until ~15,000 \ncal yr BP. AMS 14C dates from Burial Lake are approximately synchronous \nwith AMS 14C dates reported for the Betula expansion at nearby sites \nand sites across northern Alaska, but 1000-2000 yr younger than \nbulk-sediment dates. \n","author":null,"citation":"Abbott, M.B., M.E. Edwards, and B.P. Finney. 2010. \nA 40,000-yr record of environmental change from \nBurial Lake in Northwest Alaska. \nQuaternary Research, Vol. 74, pp. 156-165. \ndoi:10.1016/j.yqres.2010.03.007 \n","edition":null,"identifier":{"id":"10.1016/j.yqres.2010.03.007","type":"doi","url":"http://dx.doi.org/10.1016/j.yqres.2010.03.007"},"issue":null,"journal":"Quaternary Research","pages":null,"pubRank":"1","pubYear":2010,"reportNumber":null,"title":"A 40,000-yr record of environmental change from  Burial Lake in Northwest Alaska","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"31146","geo":{"geoType":"Feature","geometry":{"coordinates":["68.43","-159.17"],"type":"POINT"},"properties":{"easternmostLongitude":"-159.17","maxElevationMeters":"460","minElevationMeters":"460","northernmostLatitude":"68.43","southernmostLatitude":"68.43","westernmostLongitude":"-159.17"}},"locationName":"Continent>North America>United States Of America>Alaska","mappable":"Y","paleoData":[{"NOAADataTableId":"18751","coreLengthMeters":0,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties","earth science>paleoclimate>paleolimnology>magnetic susceptibility"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/burial2010.txt","linkText":"burial2010.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment>dry sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"gram per cubic centimeter","cvWhat":"physical property>density"},{"cvAdditionalInfo":"500 degrees C","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"loss on ignition","cvSeasonality":null,"cvShortName":null,"cvUnit":"weight percent","cvWhat":"biological material>bulk biological material>organic matter"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>carbon/nitrogen"},{"cvAdditionalInfo":"x10-7 units","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"magnetic susceptibility measurement with ring or loop sensor","cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless (SI system)","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility>volume magnetic susceptibility"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>magnetic susceptibility","earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/burial2010.xls","linkText":"burial2010.xls","urlDescription":"Data","variables":[]}],"dataTableName":"C98","dataTableNotes":null,"earliestYear":39291,"earliestYearBP":39291,"earliestYearCE":-37341,"mostRecentYear":44,"mostRecentYearBP":44,"mostRecentYearCE":1906,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Burial Lake"}],"studyCode":null,"studyName":"Burial Lake, Alaska 39KYr Sediment Physical Properties Data ","studyNotes":"Sediment physical properties and summary pollen data for Burial Lake\nin the northwest Brooks Range, Alaska covering the last 39,000 years. \n","version":"1.0","xmlId":"8794"}